I will give brainiest The image most closely reflects which of the following demographic changes in the Spanish colonies?

Choose 1

(Choice A)
A
a decrease in enslaved people of African descent as smallpox spread, but an increase in the number of Spaniards as they were immune

(Choice B )
B
an increase in interracial marriages between Spaniards, African people, and Native Americans to pass on immunity

(Choice C)
C
a decrease in Native Americans as smallpox spread, but an increase in Spaniards as they continued to colonize

(Choice D)
D
a decrease in Native Americans and Spaniards as smallpox infected both Native Americans and Spaniards

American troops were worried about cantracting in cuba a. yellow fever b. hepatitis c. polio

Describe the technology advancements that lead to explorers being able to sail great distances. [[ps: doesn't explain where. i am only speculating it's in europe.

(can someone . has to be turned in 1) - explain one similarity between the federal, state, and local governments. ( question 2)- explain one difference between the federal, state, and local governments. ( question 3)- explain one similarity between the federal executive branch and the state executive branch. ( question 4) - explain one difference between the federal executive branch and the state executive branch. (question 5) - explain one similarity between the federal legislative branch and the state legislative branch. ( question 6) - explain one difference between the federal legislative branch and the state legislative branch. ( question 7) - explain one similarity between the federal judicial branch and the state judicial branch. ( question 8) - explain one difference between the federal judicial branch and the state judicial branch.